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Tsunami follows big earthquake on Indonesian coast

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At least one person died and 10 were injured, according to Indonesia's Disaster Management Agency, after a series of earthquakes struck the island of Sulawesi on Friday afternoon.

Initial reports from the agency say dozens of buildings collapsed in Palu City in the Donggala region of Sulawesi.

Evacuations are underway and people have been advised to remain alert and outside their homes.

The first in a series of tremors was felt at 3 p.m. (4 a.m. ET) 35 miles north of Palu, according to the United States Geological Survey. The largest shock -- with a magnitude of 7.5 -- was detected 50 miles north of Palu, according to USGS.

The shaking of the 7.5-magnitude tremor was "severe" and the likely damage following the quake "moderate to heavy," the USGS said.

Following the initial tremors, a tsunami followed. Reports of damage haven't been made known yet.

The Latest: Indonesia's disaster agency says the magnitude 7.5 Sulawesi earthquake caused a tsunami that hit the provincial capital of Palu and another city, Donggala. https://t.co/vvfZT7bBK5